$ git clone -n https://src.fedoraproject.org/rpms/libkomparediff2.git /var/lib/mock/f40-build-2393314-60531/root/chroot_tmpdir/scmroot/libkomparediff2
Cloning into '/var/lib/mock/f40-build-2393314-60531/root/chroot_tmpdir/scmroot/libkomparediff2'...
$ git fetch origin 39b0ff4e994edef0f91ca837c8513d71b897efeb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libkomparediff2
 * [new ref]         39b0ff4e994edef0f91ca837c8513d71b897efeb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 39b0ff4 24.01.95 (still Qt5)